100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
3003PSY Final || with A+ Guaranteed Solutions. CA$16.36   Add to cart
Quickly navigate to
Preview
  2.  
  3. 3003PSY
  4.  
  5. 3003PSY

Exam (elaborations)

3003PSY Final || with A+ Guaranteed Solutions.
 4 views  0 purchase
  • Course
  • 3003PSY
  • Institution
  • 3003PSY

b-weights in bivariate regression correct answers Unstandardised regression coefficients indicating the amount of change in Y' for each change of 1 in X b-weights in multiple regression correct answers Unstandardised regression coefficient indicating the amount of change in Y' for a change of 1 ...

[Show more]

Preview 2 out of 10  pages

Document information

  • September 10, 2024
  • 10
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • b weights in bivariate regression

Written for

  • 3003PSY
  • 3003PSY

Seller

avatar-seller
FullyFocus

Reviews received

Content preview

3003PSY Final || with A+ Guaranteed Solutions.
b-weights in bivariate regression correct answers Unstandardised regression coefficients
indicating the amount of change in Y' for each change of 1 in X

b-weights in multiple regression correct answers Unstandardised regression coefficient
indicating the amount of change in Y' for a change of 1 in a single predictor (X) when all other
Xs are held constant - PARTIAL SLOPE

SSregression correct answers systematic component of variance
distance of predicted scores from the mean

SSresidual correct answers error component of variance
distance between predictor score and actual scores

What is the equation for variance explained? correct answers SSreg/SStot

What are the stages of linear modelling? correct answers 1. Model specification
2. Parameter estimation
3. Model checking
4. Prediction

What are the assumptions of regression? correct answers Normality of residuals
Homoscedasticity
Linearity
Independence of errors

What is homoscedasticity? correct answers constant variance of residuals across predictors

What does normality of residuals mean? correct answers That the residuals are centred around 0

Explain the assumption of independence of residuals. correct answers Residuals must be
uncorrelated with Y

What does the assumption of linearity mean? correct answers That there is a linear relationship
between each predictor and the criterion

What is the difference between parametric and non-parametric tests? correct answers parametric
tests involve the estimation of at least one population parameter, they have assumptions about
the specific shape of the distribution and assume DV measured at an interval or ratio level
non-parametric tests do not include either of these

What are the advantages of non-parametric tests? correct answers no assumptions of normality or
homoscedasticity
ideal for small samples

, use of ranks reduces effects of outliers

What is the difference between Pearson's r and Spearman's rho? correct answers Spearman's rho
is still calculated using Pearson's r formula but the data is instead ranked

When would you use Spearman's rho? correct answers If the assumptions of Pearson's r are not
met
i.e. if the data is not interval or ratio, normally distributed, and linear
OR if the data naturally falls in ranks, has extreme outliers or there is a monotonic relationship

What is a monotonic relationship? correct answers As x increases, Y increases but not
necessarily at a constant rate

Advantages of Spearman's rho correct answers can be used when variables are severely skewed
converts a monotonic relationship into a straight line fit
can be used for small samples

What is point-biserial correlation? correct answers Used for describing the relationship in
dichotomous variables

How do you interpret point-biserial correlation (rpb)? correct answers The sign determines the
direction of the relationship
interpreted the same as Pearson's r

What is the relationship between t and rpb correct answers independent t test would give the
same answer as rpb

What is an N=1 design? correct answers the intensive study of responding within an individual
across time
i.e. design involving only 1 participant

What characteristics of data can be used to decide whether changes are reliable (N=1 designs)?
correct answers changes in mean
changes in trend line
shift in level
latency of change
THESE ARE DETERMINED BY EXAMINING THE GRAPH VISUALLY

How do N = 1 designs exert control? correct answers remove between subjects threats to validity
baseline if stable indicates absence of extraneous factors

AB designs correct answers 1 control phase and 1 intervention phase
susceptible to maturation, sequencing and practice effects

ABA designs correct answers baseline -> treatment phase -> baseline
if treatment has an effect, we should see a return to baseline (reversal)

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller FullyFocus. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for CA$16.36. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

77858 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
CA$16.36
  • (0)
  Add to cart